[INFO] cloning repository https://github.com/TChatzigiannakis/rusty_sms
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TChatzigiannakis/rusty_sms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTChatzigiannakis%2Frusty_sms", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTChatzigiannakis%2Frusty_sms'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a35ce892422f4fe93eb0bff8ac4ccbd3a7fb3a38
[INFO] checking TChatzigiannakis/rusty_sms/a35ce892422f4fe93eb0bff8ac4ccbd3a7fb3a38 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTChatzigiannakis%2Frusty_sms" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TChatzigiannakis/rusty_sms on toolchain 4d98531622e1718ae0bc3c7a1ab9cd8938428452
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/TChatzigiannakis/rusty_sms
[INFO] finished tweaking git repo https://github.com/TChatzigiannakis/rusty_sms
[INFO] tweaked toml for git repo https://github.com/TChatzigiannakis/rusty_sms written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/TChatzigiannakis/rusty_sms already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7d99ae1c64ec487eaeea64a5da837f590ff795c8a46b466d65657c5c89772c04
[INFO] running `Command { std: "docker" "start" "-a" "7d99ae1c64ec487eaeea64a5da837f590ff795c8a46b466d65657c5c89772c04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d99ae1c64ec487eaeea64a5da837f590ff795c8a46b466d65657c5c89772c04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d99ae1c64ec487eaeea64a5da837f590ff795c8a46b466d65657c5c89772c04", kill_on_drop: false }`
[INFO] [stdout] 7d99ae1c64ec487eaeea64a5da837f590ff795c8a46b466d65657c5c89772c04
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail_expr_drop_order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7fe7874b92c051d9a30acc81db4d68833a2b4693aa7e0b0c1d68270629c3223b
[INFO] running `Command { std: "docker" "start" "-a" "7fe7874b92c051d9a30acc81db4d68833a2b4693aa7e0b0c1d68270629c3223b", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling num-bigint v0.2.0
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking rusty_sms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/vm/callbacks.rs:6:39
[INFO] [stdout]   |
[INFO] [stdout] 6 |     before_instruction_fetch: Vec<Box<FnMut(&mut Machine)>>,
[INFO] [stdout]   |                                       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 6 |     before_instruction_fetch: Vec<Box<dyn FnMut(&mut Machine)>>,
[INFO] [stdout]   |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/vm/callbacks.rs:7:38
[INFO] [stdout]   |
[INFO] [stdout] 7 |     before_instruction_exec: Vec<Box<FnMut(&mut Machine, Mnemonic)>>,
[INFO] [stdout]   |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 7 |     before_instruction_exec: Vec<Box<dyn FnMut(&mut Machine, Mnemonic)>>,
[INFO] [stdout]   |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/vm/callbacks.rs:8:37
[INFO] [stdout]   |
[INFO] [stdout] 8 |     after_instruction_exec: Vec<Box<FnMut(&mut Machine, Mnemonic)>>,
[INFO] [stdout]   |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 8 |     after_instruction_exec: Vec<Box<dyn FnMut(&mut Machine, Mnemonic)>>,
[INFO] [stdout]   |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vm/callbacks.rs:10:62
[INFO] [stdout]    |
[INFO] [stdout] 10 |     before_instruction_exec_match: HashMap<Mnemonic, Vec<Box<FnMut(&mut Machine)>>>,
[INFO] [stdout]    |                                                              ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 10 |     before_instruction_exec_match: HashMap<Mnemonic, Vec<Box<dyn FnMut(&mut Machine)>>>,
[INFO] [stdout]    |                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vm/callbacks.rs:11:61
[INFO] [stdout]    |
[INFO] [stdout] 11 |     after_instruction_exec_match: HashMap<Mnemonic, Vec<Box<FnMut(&mut Machine)>>>,
[INFO] [stdout]    |                                                             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 11 |     after_instruction_exec_match: HashMap<Mnemonic, Vec<Box<dyn FnMut(&mut Machine)>>>,
[INFO] [stdout]    |                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vm/callbacks.rs:26:65
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn on_before_instruction_fetch(&mut self, callback: Box<FnMut(&mut Machine)>) {
[INFO] [stdout]    |                                                                 ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn on_before_instruction_fetch(&mut self, callback: Box<dyn FnMut(&mut Machine)>) {
[INFO] [stdout]    |                                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vm/callbacks.rs:36:64
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn on_before_instruction_exec(&mut self, callback: Box<FnMut(&mut Machine, Mnemonic)>) {
[INFO] [stdout]    |                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn on_before_instruction_exec(&mut self, callback: Box<dyn FnMut(&mut Machine, Mnemonic)>) {
[INFO] [stdout]    |                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vm/callbacks.rs:50:63
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn on_after_instruction_exec(&mut self, callback: Box<FnMut(&mut Machine, Mnemonic)>) {
[INFO] [stdout]    |                                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn on_after_instruction_exec(&mut self, callback: Box<dyn FnMut(&mut Machine, Mnemonic)>) {
[INFO] [stdout]    |                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/vm/callbacks.rs:6:39
[INFO] [stdout]   |
[INFO] [stdout] 6 |     before_instruction_fetch: Vec<Box<FnMut(&mut Machine)>>,
[INFO] [stdout]   |                                       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 6 |     before_instruction_fetch: Vec<Box<dyn FnMut(&mut Machine)>>,
[INFO] [stdout]   |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/vm/callbacks.rs:7:38
[INFO] [stdout]   |
[INFO] [stdout] 7 |     before_instruction_exec: Vec<Box<FnMut(&mut Machine, Mnemonic)>>,
[INFO] [stdout]   |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 7 |     before_instruction_exec: Vec<Box<dyn FnMut(&mut Machine, Mnemonic)>>,
[INFO] [stdout]   |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/vm/callbacks.rs:8:37
[INFO] [stdout]   |
[INFO] [stdout] 8 |     after_instruction_exec: Vec<Box<FnMut(&mut Machine, Mnemonic)>>,
[INFO] [stdout]   |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 8 |     after_instruction_exec: Vec<Box<dyn FnMut(&mut Machine, Mnemonic)>>,
[INFO] [stdout]   |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vm/callbacks.rs:10:62
[INFO] [stdout]    |
[INFO] [stdout] 10 |     before_instruction_exec_match: HashMap<Mnemonic, Vec<Box<FnMut(&mut Machine)>>>,
[INFO] [stdout]    |                                                              ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 10 |     before_instruction_exec_match: HashMap<Mnemonic, Vec<Box<dyn FnMut(&mut Machine)>>>,
[INFO] [stdout]    |                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vm/callbacks.rs:11:61
[INFO] [stdout]    |
[INFO] [stdout] 11 |     after_instruction_exec_match: HashMap<Mnemonic, Vec<Box<FnMut(&mut Machine)>>>,
[INFO] [stdout]    |                                                             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 11 |     after_instruction_exec_match: HashMap<Mnemonic, Vec<Box<dyn FnMut(&mut Machine)>>>,
[INFO] [stdout]    |                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vm/callbacks.rs:26:65
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn on_before_instruction_fetch(&mut self, callback: Box<FnMut(&mut Machine)>) {
[INFO] [stdout]    |                                                                 ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn on_before_instruction_fetch(&mut self, callback: Box<dyn FnMut(&mut Machine)>) {
[INFO] [stdout]    |                                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vm/callbacks.rs:67:23
[INFO] [stdout]    |
[INFO] [stdout] 67 |         callback: Box<FnMut(&mut Machine)>,
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 67 |         callback: Box<dyn FnMut(&mut Machine)>,
[INFO] [stdout]    |                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/vm/callbacks.rs:102:23
[INFO] [stdout]     |
[INFO] [stdout] 102 |         callback: Box<FnMut(&mut Machine)>,
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 102 |         callback: Box<dyn FnMut(&mut Machine)>,
[INFO] [stdout]     |                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vm/callbacks.rs:36:64
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn on_before_instruction_exec(&mut self, callback: Box<FnMut(&mut Machine, Mnemonic)>) {
[INFO] [stdout]    |                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn on_before_instruction_exec(&mut self, callback: Box<dyn FnMut(&mut Machine, Mnemonic)>) {
[INFO] [stdout]    |                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vm/callbacks.rs:50:63
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn on_after_instruction_exec(&mut self, callback: Box<FnMut(&mut Machine, Mnemonic)>) {
[INFO] [stdout]    |                                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn on_after_instruction_exec(&mut self, callback: Box<dyn FnMut(&mut Machine, Mnemonic)>) {
[INFO] [stdout]    |                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vm/callbacks.rs:67:23
[INFO] [stdout]    |
[INFO] [stdout] 67 |         callback: Box<FnMut(&mut Machine)>,
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 67 |         callback: Box<dyn FnMut(&mut Machine)>,
[INFO] [stdout]    |                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/vm/callbacks.rs:102:23
[INFO] [stdout]     |
[INFO] [stdout] 102 |         callback: Box<FnMut(&mut Machine)>,
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 102 |         callback: Box<dyn FnMut(&mut Machine)>,
[INFO] [stdout]     |                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/vm/cpu/alu.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub(crate) fn negate<T: Add<Output = T> + Not<Output = T> + One>(value: T) -> T {
[INFO] [stdout]    |                                                                  -------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 35 |     !value + num::one()
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]    = note: requested on the command line with `-D tail-expr-drop-order`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/vm/cpu/alu.rs:35:14
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub(crate) fn negate<T: Add<Output = T> + Not<Output = T> + One>(value: T) -> T {
[INFO] [stdout]    |                                                                  -------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 35 |     !value + num::one()
[INFO] [stdout]    |              ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/vm/cpu/alu.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub(crate) fn negate<T: Add<Output = T> + Not<Output = T> + One>(value: T) -> T {
[INFO] [stdout]    |                                                                  -------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 35 |     !value + num::one()
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout]    = note: requested on the command line with `-D tail-expr-drop-order`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021
[INFO] [stdout]   --> src/vm/cpu/alu.rs:35:14
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub(crate) fn negate<T: Add<Output = T> + Not<Output = T> + One>(value: T) -> T {
[INFO] [stdout]    |                                                                  -------- these values have significant drop implementation and will observe changes in drop order under Edition 2024
[INFO] [stdout] 35 |     !value + num::one()
[INFO] [stdout]    |              ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see issue #123739 <https://github.com/rust-lang/rust/issues/123739>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rusty_sms` (lib) due to 3 previous errors; 10 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors; 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rusty_sms` (lib test) due to 3 previous errors; 10 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "7fe7874b92c051d9a30acc81db4d68833a2b4693aa7e0b0c1d68270629c3223b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fe7874b92c051d9a30acc81db4d68833a2b4693aa7e0b0c1d68270629c3223b", kill_on_drop: false }`
[INFO] [stdout] 7fe7874b92c051d9a30acc81db4d68833a2b4693aa7e0b0c1d68270629c3223b